Power drive



3 sheets-sheet 1 H. L. TuRNl-:Y

l POWER DRIVE Filed nay 2,l 1955 May 30, 1939.

May 30, 1939.

HQ L. TURNEY PowER univr-J' Filed May 2, 1935l :s sheets-sneu 2 .Dui

NVENTOR. v #M7 ,amy

Y B #QW ATTORNEYS.

May 30, 1939. H. L. TuRNEY POWER DRIVE Filed nay 2, 1935 fshee'ts-*Sheet 3 A TTORNEYS.

Patented May 30, 1939 l Unirse STATES Perser orifice.l

POWER DRIVE Harry L.Turney, Los Angeles, Calif., assigner to' Patents & Royalties Corporation, Los Angeles, Calif., a corporation of California Application May 2, 1935, Serial No. 19,419

3 Claims. (C1. 10S-35) 'I'he present invention is directed to power driving the pumps through a differential gear, drives. It is of particular advantage in driving the pumps being arranged at one take-01T of the apparatus such as pumps which require a congear and the opposite take-off of the gear being tinuous active driving force and in some instances subjected to a variable brake, 'preferably a water E at a very reduced speed. The power drive of the brake. In carrying the invention forward means 5 invention is of particular advantage when the are provided for automatically varying the water prime mover, or motor, is an internal combusbrake in response to the mud line pressure and tion engine of some type which is only efficient preferably also means are provided for setting above certain minimum speeds. the pressure that may be automatically maint...

The invention is exemplified as driving the tained by the apparatus. In this Way full pres- 'l0 pumps ordinarily used in connection with rotary Sure is assured t0 the predetermined degree 0f drills, particularly in connection with such drills pressure t0 Which the apparatus may be adjusted when used for drilling deep Wells, such as oil and at the same time danger 0f Over-loading wells. with this drilling operation, water or the pump is Obviated. The invention also con-Z mud is continuously circulated through the bit templates a mere effeCtVe llOOk-up 0f the erl- 15 and is returned to the surface carrying with it eine Witll the apparatus generally used With deep the cuttings of the drill. It is not unusual in this Well set Werks Features aridv details 0f the irloperation for a stoppage of the circulation pas- Verltieil Will appear from the speCiCatiOrl and sage to occur and under these conditions treclaims. mendous pressures are built up 0n the systemy A preferred embodiment of the invention is il- 20 particularly if powerful engines are used, these iustrated in the accompanying drawings as folpressures in some instances being suflicient to lOWSI- wreck the apparatus. Heretofore it has been Fig- 1 sllOWS a plan VieW Of the apparatus ascommon to drive such pumps with steam as a SOCated Witll a drilling set Works. driving fluid and such pumps `een be readily Fig. 21S an elevation 0f the apparatus. 25 Controlled and emeienuy operated at, any speed Fig. 3 is an enlarged section of the differential and in consequence there is a follow-up and conand Water brake 0n the line 3 3 in Fig- 1- tinuous Apressure delivered even though there is Figl is arl eleVatiOIl 0f the Water COI1t101mechan almost complete stoppage of the circulating arlisirl, a part being irl seetiOD- system. With motors which are not well adapted Fig- 5 is a VieW 0f the Water brake, a Side 0f '30 in themselves to give this follow-up pressure at the brake being reInOVed t0 better Show conslow speeds various expedients have been tried StruetlOns re maintain pressure when there is e partial, The Sub-frame 0f the apparatus is made up or complete stoppage. This has been accomof longitudinal girders' l and cross girders la. .3.5

pushed in some instances by trapping mud in Engines 2 and 3 are mounted on skid frames 4, 4 the uns and bypassing the fluid Via a sump and 5l, 5. These skid frames are adapted to be back to the pump This permits a Continuous moved across the sub-frame as units on which Operation of the pump, but i1; does not give an the engines are mounted. These skid lframes effective follow-up pressure to the circulating l 4 and 5, 5 are Connected by Cross members 6 ,40

passages. Another attempted solution involves arid l reSpeCtiVely- The mOtOr 3 has a power the use of high pressure relief valves, bul;` these take-off shaft 3 which is controlled by a clutch 9. devices have not been entirely satisfactory. In The Shaft 3 'iS m0urlted irl bearings l0, these some Cases where fluid pressure from the pump is bearings being mounted on the cross members l. used for cementing jobs in the well it is very de- A gear il iS Xed Orl the shafty 8 and meshes r sirable to maintain full high pressure with prac- With a gear -l2- The gear l2 is iXed 0u a pinion 4 tically no circulation. Here again difficulty has shaft I3. The shaft i3 is journaled in bearings been experienced with other than steam pumps i4 mounted on extensions lb of the longitudinal in giving the follow-up action to maintain these glrders TrariSmiSsiOrl gears l5 are lXed 0n the high pressures with very little movement, or disshaft I3 and these vgears mesh gears I6 jOur- 50 charge ofthe pumps. naled on a transmission shaft lea. The shaft Ilia With the present invention this difficulty is enis .iourrlaled irl bearings i9. Drivers il are fXed tirely corrected in a comparatively simple manon the shaft l and are arranged between pairs ner by providing a slip drive between the pumps of the gears l5. Clutches i8 connect the drivers and the motor. Preferably this is effected by AI'l with the gears, the selection being made 55 through air-actuated means by way of nozzles |8a. A gear 20 is fixed on the shaft |6a and meshes with a gear 2|. The gear 2| is connected through a clutch mechanism (not shown) with a hoisting drum 22. A reverse gear 23 is journaled on the shaft I3 and is controlled by a clutch 23a with which it may be fixed with the shaft I3. The gear 23 meshes with an idling gear 24 carried beneath by a shaft 24a and the idling gear 24 meshes with a gear 25 fixed on the transmission at |6a. shaft 26a below gear 25 and meshes with 25. The shaft 26a is carried by a bracket 2Gb. A sprocket 21 is journaled on the shaft 26a and is adapted to be fixed with the shaft by a clutch 28. With this mechanism the drum may be operated through the transmission gears for operating the cable. It may be reversed through the Y gear mechanism, if desired, and the sprocket 21 may be driven at will from the gearing as described and the sprocket 21 may be operated in either direction for operating a drill table. A shaft 29 forms the take-off for the engine 2 and the shaft 29 is journaled in bearings 30 carried by the cross members 6. A pulley 3| is mounted on the shaft 29 and adapted to be locked with the shaft by a clutch 32. V-belts 33 communicate the motion of the pulley 3| to a pulley 34 mounted on the shaft 8. A clutch 35 is adapted to lock the pulley 34 with the shaft 8. YIn this way both engines 2 and 3 may be utilized for operating the hoist 22, if desired.

A ,gearV 36 is fixed on the shaft 29 and meshes with a gear 31. The gear 31 is xed on a shaft 38 and the shaft is mounted in bearings 39 on the cross members 6.

The gear 31 meshes with a gear 40. The gear 49 is fixed on a sleeve 4|. The sleeve 4| is journaled on a shaft 42 by means of roller bearings 43 l(see Fig. 3). The sleeve 4| extends from a housing 44 of a differential. The opposite side of the housing terminates in a sleeve 45 which is journaled through` a roller bearing 46 (Fig. 3) on a shaft 54. A ring 41 is clamped between iianges 49 by bolts 48. Stub shafts 59 extend from the ring 41 into the housing and differential pinions 5| are journaled on the shafts 50. 'I'he pinions 5| mesh with opposing gears 52 and 53 which are fixed on the shafts 42 and 54 respectively, these shafts forming the power take-off from the differential.

Pulleys 55 are journaled on the shaft 54 and are adapted to be locked with the shaft Vby clutches 56. Belts51 convey the movement of the pulleys 55 to pulleys 58.

The pulleys 58 are fixed on shafts 59. The shafts 59 are arranged to drive mud pumps 69. They are of the ordinary reciprocating type and have discharge pipes 6| leading to apipe 62 Iwhich pipe ordinarily leads to the drill stem.

Valves 63 are provided `s'o that the discharge from either pump may be cut off and a single pump utilized, if desired. f v- .A vwater brake 64 is arranged on the shaft 42.'

This brake is in some respects of ordinary construction (Fig. 3). It has a casing 65 which is made in halves, the halves being secured together by bolts 66. Arotor 61 is fixed on the shaft 42. The rotor is provided withY the usual water brake bla-des 68 which operate in conjunction with blades 69 arranged in the case, or stator. Water is delivered to annular passages 19 in the case from a supply pipe 1| b and is delivered to the brake chamber through passages 19a and water is discharged throughl a passage 1 I. The purpose A gear 26 is fixed on a1 of the circulation of water through the brake is to permit of the cooling of the water by any suitable means (not shown).

Spaces 13 are provided between the edges of the blades 68 and 69 and gates 12 are slidingly mounted in guides 14 provided in the case. Rods 15 extend through the gates through stuffing boxes 16. (See Fig. 5.)

The retarding effect of the water brake is varied by adjusting these gates. As they are moved to their outer position a greater area of the opposing pockets in the rotor and stator are exposed and a greater resistance is given to the movement of the rotor. As the gates are closed and this opposed area is reduced the resistance offered by the brake is also reduced.

In order to adjust the gates I have provided a simple mechanism as follows (Fig. 4) The outer ends of the rods 15 are connected by links 11 and 18 with levers 19 and 80 respectively. The lever 19 is journaled on a pin 19a on the case. The lever 89 is journaled on a pin 8| on the case. An arm 82 extends from the lever 19 and is connected by a link 83 with an` armv 84 extending from the lever 99. By following this lever scheme it will be noted that reverse movements are given to the links 11 and consequently to the rods 'i5 so that both gates are opened, or closed simultaneously by the action of the lever 19.

It will be noted that as the driving ring of the differential is driven the shaft 54 communicates movement to the pumps and the power that is delivered to the pumps through this shaft is dependentV on the resistance which is maintained on the shaft 42 by the Water brake. This resstance may be adjusted and consequently the delivery by the pumps definitely controlled through the water brake without changing the speed of the driving motor. Thus a slip drive is provided of rugged construction and one that may be readily controlled so far as any heat factors are concerned so that any desired pressure may be maintained by the pumps from no strokes to full strokes of the pumps and this Will be a follow-up pressure determined by the water brake.

Irprefer to control these gates and consequent- 4ly the resistance of the brake automatically in response to variations of the fluid pressure ooming from the pumps. This is accomplished by the following mechanism (Fig. 4) A link 85 extends from the lever 19 to a cross head 86 mounted in a guider81. A rod 88 extends from the cross head to a piston 89. 'Ihe piston is vslidingly mounted in a cylinder 99. A pipe 9| extends from the cylinder 99 to the discharge pipes 6| on the pumps. Valves 92 and 93 are provided in the connectionsleading from the pipe 9| to the discharge pipe 6| permitting of a connection to both pumps,

or a selective cutting out of either pump from the pipe 9|. A spring 94 opposes the movement of the piston 89 and is of aV strength giving the desiredv resistance to the` piston 89 to require the pre-determined pressure in the pipe 9| coming from the pumps to move the piston and consequently'vary the position of the gates and the resistance of the water brake.

VIt may be desirable to change the pre-deter-r mined pressure .as delivered by the pump and this is accomplished as follows: A piston 95 is slidingly mounted on the rod and arranged in a cylinder 95a slightly larger than the cylinder 90. A pipe 96 connects the cylinder 95a withv the pipe 9| and by reason of the larger area of the piston 95 exerts sufficient pressure on that piston to operate the piston against the spring 94 when there is operative pressure on the piston 89. A rod 98 extends from the piston and terminates in an indicating iinger 99 which traverses a scale |00. A controlling valve 91 is provided in the pipe 96 so that the fluid may be admitted back of the piston 95 and the piston moved to any point desired as indicated by the scale so as to adjust the mechanism to maintain any pre-determined pressure on the mud line that may be desired.

It will be seen therefore, that with any pre-determined pressure setting the operator is relieved of any anxiety as to any building-up of injurious pressures, or any anxiety as to the maintenance of the desired pressure and that this predetermined, or desired pressure may be changed at will through the operation of the piston 95 through the control valve 91. The control valve may be placed at any desired position, ordinarily at the control position of the entire rig.

In order that the belt 33 may be maintained in working tension the shaft 42 is mounted in bearings 42a and the shaft 54 in bearings 54a and these bearings are mounted on the same frame as the engine 2, the cross members 6 beingextended for this purpose. The frame made up of the girders 4 and cross members 6 is slidingly mounted on the longitudinal girders l and jacks I0! are provided by means of which the frame carrying the engine 2 and the shafts 42 and 54 may be moved to adjust the belt 33 and this is accomplished without disturbing the driving connection between the engine 2 and the shaft 42. It will be understood that the pumps will be similarly adjusted on a sliding base for tightening their belts.

Water brake housing 64 (Fig. 3) is prevented from rotating by stop |02 which bears on any suitable portion |03 provided in the general framework.

What I claim as new is:

l. In a power drive, the combination of a dif ferential gear having a driving element and differential take-off elements driven by the driving element; means driving the driving element; a fluid pump driven by one of the take-off elements; a variable resistance water brake on the other take-off element; and means responsive to pressure of the fluid pumped varying the brake resistance.

2. In a power drive, the combination of a differential gear having a driving element and differential take-off elements driven by the driving element; means driving the driving element; a power delivering means driven by one take-oi element; a pump driven by the power delivering means; a water brake having a rotor and stator with blades spaced axially; said rotor being driven by the other diiferential take-off element; a gate device varying the water transfer area; and means responsive-to pressure of the pumped fluid adjusting the device.

3. In a power drive, the combination of a differential gear having a driving element and differential take-01T elements driven by the driving element; means driving the driving element; a fluid pump driven by one of the take-01T elements; a variable resistance water brake on the other take-oir element; means responsive to pressure of the fluid pumped varying the brake resistance; and manually controlled devices varying the pressure responsive means.

HARRY L. TURNEY. 

